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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// See ES 5.1, 15.10.2.8
function canonicalize(ch)
{
var u = String.fromCharCode(ch).toUpperCase();
if (u.length > 1)
return ch;
var cu = u.charCodeAt(0);
if (ch >= 128 && cu < 128)
return ch;
return cu;
}
var MAX_UCS2 = 0xFFFF;
var MAX_LATIN = 0xFF;
var groupedCanonically = [];
// Pass 1: populate groupedCanonically - this is mapping from canonicalized
// values back to the set of character code that canonicalize to them.
for (var i = 0; i <= MAX_UCS2; ++i) {
var ch = canonicalize(i);
if (!groupedCanonically[ch])
groupedCanonically[ch] = [];
groupedCanonically[ch].push(i);
}
var typeInfo = [];
var latinTypeInfo = [];
var characterSetInfo = [];
// Pass 2: populate typeInfo & characterSetInfo. For every character calculate
// a typeInfo value, described by the types above, and a value payload.
for (cu in groupedCanonically) {
// The set of characters that canonicalize to cu
var characters = groupedCanonically[cu];
// If there is only one, it is unique.
if (characters.length == 1) {
typeInfo[characters[0]] = "CanonicalizeUnique:0";
latinTypeInfo[characters[0]] = characters[0] <= MAX_LATIN ? "CanonicalizeLatinSelf:0" : "CanonicalizeLatinInvalid:0";
continue;
}
// Sort the array.
characters.sort(function(x,y){return x-y;});
// If there are more than two characters, create an entry in characterSetInfo.
if (characters.length > 2) {
for (i in characters)
typeInfo[characters[i]] = "CanonicalizeSet:" + characterSetInfo.length;
characterSetInfo.push(characters);
if (characters[1] <= MAX_LATIN)
throw new Error("sets with more than one latin character not supported!");
if (characters[0] <= MAX_LATIN) {
for (i in characters)
latinTypeInfo[characters[i]] = "CanonicalizeLatinOther:" + characters[0];
latinTypeInfo[characters[0]] = "CanonicalizeLatinSelf:0";
} else {
for (i in characters)
latinTypeInfo[characters[i]] = "CanonicalizeLatinInvalid:0";
}
continue;
}
// We have a pair, mark alternating ranges, otherwise track whether this is the low or high partner.
var lo = characters[0];
var hi = characters[1];
var delta = hi - lo;
if (delta == 1) {
var type = lo & 1 ? "CanonicalizeAlternatingUnaligned:0" : "CanonicalizeAlternatingAligned:0";
typeInfo[lo] = type;
typeInfo[hi] = type;
} else {
typeInfo[lo] = "CanonicalizeRangeLo:" + delta;
typeInfo[hi] = "CanonicalizeRangeHi:" + delta;
}
if (lo > MAX_LATIN) {
latinTypeInfo[lo] = "CanonicalizeLatinInvalid:0";
latinTypeInfo[hi] = "CanonicalizeLatinInvalid:0";
} else if (hi > MAX_LATIN) {
latinTypeInfo[lo] = "CanonicalizeLatinSelf:0";
latinTypeInfo[hi] = "CanonicalizeLatinOther:" + lo;
} else {
if (delta != 0x20 || lo & 0x20)
throw new Error("pairs of latin characters that don't mask with 0x20 not supported!");
latinTypeInfo[lo] = "CanonicalizeLatinMask0x20:0";
latinTypeInfo[hi] = "CanonicalizeLatinMask0x20:0";
}
}
var rangeInfo = [];
// Pass 3: coallesce types into ranges.
for (var end = 0; end <= MAX_UCS2; ++end) {
var begin = end;
var type = typeInfo[end];
while (end < MAX_UCS2 && typeInfo[end + 1] == type)
++end;
rangeInfo.push({begin:begin, end:end, type:type});
}
var latinRangeInfo = [];
// Pass 4: coallesce latin-1 types into ranges.
for (var end = 0; end <= MAX_UCS2; ++end) {
var begin = end;
var type = latinTypeInfo[end];
while (end < MAX_UCS2 && latinTypeInfo[end + 1] == type)
++end;
latinRangeInfo.push({begin:begin, end:end, type:type});
}
// Helper function to convert a number to a fixed width hex representation of a C uint16_t.
function hex(x)
{
var s = Number(x).toString(16);
while (s.length < 4)
s = 0 + s;
return "0x" + s + "u";
}
var copyright = (
"/*" + "\n" +
" * Copyright (C) 2012 Apple Inc. All rights reserved." + "\n" +
" *" + "\n" +
" * Redistribution and use in source and binary forms, with or without" + "\n" +
" * modification, are permitted provided that the following conditions" + "\n" +
" * are met:" + "\n" +
" * 1. Redistributions of source code must retain the above copyright" + "\n" +
" * notice, this list of conditions and the following disclaimer." + "\n" +
" * 2. Redistributions in binary form must reproduce the above copyright" + "\n" +
" * notice, this list of conditions and the following disclaimer in the" + "\n" +
" * documentation and/or other materials provided with the distribution." + "\n" +
" *" + "\n" +
" * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY" + "\n" +
" * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE" + "\n" +
" * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR" + "\n" +
" * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR" + "\n" +
" * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL," + "\n" +
" * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO," + "\n" +
" * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR" + "\n" +
" * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY" + "\n" +
" * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT" + "\n" +
" * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE" + "\n" +
" * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. " + "\n" +
" */");
print(copyright);
print();
print("// DO NOT EDIT! - this file autogenerated by YarrCanonicalizeUCS2.js");
print();
print('#include "config.h"');
print('#include "YarrCanonicalizeUCS2.h"');
print();
print("namespace JSC { namespace Yarr {");
print();
print("#include <stdint.h>");
print();
for (i in characterSetInfo) {
var characters = ""
var set = characterSetInfo[i];
for (var j in set)
characters += hex(set[j]) + ", ";
print("uint16_t ucs2CharacterSet" + i + "[] = { " + characters + "0 };");
}
print();
print("static const size_t UCS2_CANONICALIZATION_SETS = " + characterSetInfo.length + ";");
print("uint16_t* characterSetInfo[UCS2_CANONICALIZATION_SETS] = {");
for (i in characterSetInfo)
print(" ucs2CharacterSet" + i + ",");
print("};");
print();
print("const size_t UCS2_CANONICALIZATION_RANGES = " + rangeInfo.length + ";");
print("UCS2CanonicalizationRange rangeInfo[UCS2_CANONICALIZATION_RANGES] = {");
for (i in rangeInfo) {
var info = rangeInfo[i];
var typeAndValue = info.type.split(':');
print(" { " + hex(info.begin) + ", " + hex(info.end) + ", " + hex(typeAndValue[1]) + ", " + typeAndValue[0] + " },");
}
print("};");
print();
print("const size_t LATIN_CANONICALIZATION_RANGES = " + latinRangeInfo.length + ";");
print("LatinCanonicalizationRange latinRangeInfo[LATIN_CANONICALIZATION_RANGES] = {");
for (i in latinRangeInfo) {
var info = latinRangeInfo[i];
var typeAndValue = info.type.split(':');
print(" { " + hex(info.begin) + ", " + hex(info.end) + ", " + hex(typeAndValue[1]) + ", " + typeAndValue[0] + " },");
}
print("};");
print();
print("} } // JSC::Yarr");
print();
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